OK, let's work through this together. We're starting with 413 and we're going to multiply it by 312, which means we add 413 to itself 312 times.
Step 1: 0 + 413 = 413
Step 2: 413 + 413 = 826
Step 3: 826 + 413 = 1239
Step 4: 1239 + 413 = 1652
Step 5: 1652 + 413 = 2065
Step 6: 2065 + 413 = 2478
Step 7: 2478 + 413 = 2891
Step 8: 2891 + 413 = 3304
Step 9: 3304 + 413 = 3717
Step 10: 3717 + 413 = 4130
Step 11: 4130 + 413 = 4543
Step 12: 4543 + 413 = 4956
Step 13: 4956 + 413 = 5369
Step 14: 5369 + 413 = 5782
Step 15: 5782 + 413 = 6195
Step 16: 6195 + 413 = 6608
Step 17: 6608 + 413 = 7021
Step 18: 7021 + 413 = 7434
Step 19: 7434 + 413 = 7847
Step 20: 7847 + 413 = 8260
Step 21: 8260 + 413 = 8673
Step 22: 8673 + 413 = 9086
Step 23: 9086 + 413 = 9499
Step 24: 9499 + 413 = 9912
Step 25: 9912 + 413 = 10325
Step 26: 10325 + 413 = 10738
Step 27: 10738 + 413 = 11151
Step 28: 11151 + 413 = 11564
Step 29: 11564 + 413 = 11977
Step 30: 11977 + 413 = 12390
Step 31: 12390 + 413 = 12803
Step 32: 12803 + 413 = 13216
Step 33: 13216 + 413 = 13629
Step 34: 13629 + 413 = 14042
Step 35: 14042 + 413 = 14455
Step 36: 14455 + 413 = 14868
Step 37: 14868 + 413 = 15281
Step 38: 15281 + 413 = 15694
Step 39: 15694 + 413 = 16107
Step 40: 16107 + 413 = 16520
Step 41: 16520 + 413 = 16933
Step 42: 16933 + 413 = 17346
Step 43: 17346 + 413 = 17759
Step 44: 17759 + 413 = 18172
Step 45: 18172 + 413 = 18585
Step 46: 18585 + 413 = 18998
Step 47: 18998 + 413 = 19411
Step 48: 19411 + 413 = 19824
Step 49: 19824 + 413 = 20237
Step 50: 20237 + 413 = 20650
Step 51: 20650 + 413 = 21063
Step 52: 21063 + 413 = 21476
Step 53: 21476 + 413 = 21889
Step 54: 21889 + 413 = 22302
Step 55: 22302 + 413 = 22715
Step 56: 22715 + 413 = 23128
Step 57: 23128 + 413 = 23541
Step 58: 23541 + 413 = 23954
Step 59: 23954 + 413 = 24367
Step 60: 24367 + 413 = 24780
Step 61: 24780 + 413 = 25193
Step 62: 25193 + 413 = 25606
Step 63: 25606 + 413 = 26019
Step 64: 26019 + 413 = 26432
Step 65: 26432 + 413 = 26845
Step 66: 26845 + 413 = 27258
Step 67: 27258 + 413 = 27671
Step 68: 27671 + 413 = 28084
Step 69: 28084 + 413 = 28497
Step 70: 28497 + 413 = 28910
Step 71: 28910 + 413 = 29323
Step 72: 29323 + 413 = 29736
Step 73: 29736 + 413 = 30149
Step 74: 30149 + 413 = 30562
Step 75: 30562 + 413 = 30975
Step 76: 30975 + 413 = 31388
Step 77: 31388 + 413 = 31801
Step 78: 31801 + 413 = 32214
Step 79: 32214 + 413 = 32627
Step 80: 32627 + 413 = 33040
Step 81: 33040 + 413 = 33453
Step 82: 33453 + 413 = 33866
Step 83: 33866 + 413 = 34279
Step 84: 34279 + 413 = 34692
Step 85: 34692 + 413 = 35105
Step 86: 35105 + 413 = 35518
Step 87: 35518 + 413 = 35931
Step 88: 35931 + 413 = 36344
Step 89: 36344 + 413 = 36757
Step 90: 36757 + 413 = 37170
Step 91: 37170 + 413 = 37583
Step 92: 37583 + 413 = 37996
Step 93: 37996 + 413 = 38409
Step 94: 38409 + 413 = 38822
Step 95: 38822 + 413 = 39235
Step 96: 39235 + 413 = 39648
Step 97: 39648 + 413 = 40061
Step 98: 40061 + 413 = 40474
Step 99: 40474 + 413 = 40887
Step 100: 40887 + 413 = 41300
Step 101: 41300 + 413 = 41713
Step 102: 41713 + 413 = 42126
Step 103: 42126 + 413 = 42539
Step 104: 42539 + 413 = 42952
Step 105: 42952 + 413 = 43365
Step 106: 43365 + 413 = 43778
Step 107: 43778 + 413 = 44191
Step 108: 44191 + 413 = 44604
Step 109: 44604 + 413 = 45017
Step 110: 45017 + 413 = 45430
Step 111: 45430 + 413 = 45843
Step 112: 45843 + 413 = 46256
Step 113: 46256 + 413 = 46669
Step 114: 46669 + 413 = 47082
Step 115: 47082 + 413 = 47495
Step 116: 47495 + 413 = 47908
Step 117: 47908 + 413 = 48321
Step 118: 48321 + 413 = 48734
Step 119: 48734 + 413 = 49147
Step 120: 49147 + 413 = 49560
Step 121: 49560 + 413 = 49973
Step 122: 49973 + 413 = 50386
Step 123: 50386 + 413 = 50799
Step 124: 50799 + 413 = 51212
Step 125: 51212 + 413 = 51625
Step 126: 51625 + 413 = 52038
Step 127: 52038 + 413 = 52451
Step 128: 52451 + 413 = 52864
Step 129: 52864 + 413 = 53277
Step 130: 53277 + 413 = 53690
Step 131: 53690 + 413 = 54103
Step 132: 54103 + 413 = 54516
Step 133: 54516 + 413 = 54929
Step 134: 54929 + 413 = 55342
Step 135: 55342 + 413 = 55755
Step 136: 55755 + 413 = 56168
Step 137: 56168 + 413 = 56581
Step 138: 56581 + 413 = 56994
Step 139: 56994 + 413 = 57407
Step 140: 57407 + 413 = 57820
Step 141: 57820 + 413 = 58233
Step 142: 58233 + 413 = 58646
Step 143: 58646 + 413 = 59059
Step 144: 59059 + 413 = 59472
Step 145: 59472 + 413 = 59885
Step 146: 59885 + 413 = 60298
Step 147: 60298 + 413 = 60711
Step 148: 60711 + 413 = 61124
Step 149: 61124 + 413 = 61537
Step 150: 61537 + 413 = 61950
Step 151: 61950 + 413 = 62363
Step 152: 62363 + 413 = 62776
Step 153: 62776 + 413 = 63189
Step 154: 63189 + 413 = 63602
Step 155: 63602 + 413 = 64015
Step 156: 64015 + 413 = 64428
Step 157: 64428 + 413 = 64841
Step 158: 64841 + 413 = 65254
Step 159: 65254 + 413 = 65667
Step 160: 65667 + 413 = 66080
Step 161: 66080 + 413 = 66493
Step 162: 66493 + 413 = 66906
Step 163: 66906 + 413 = 67319
Step 164: 67319 + 413 = 67732
Step 165: 67732 + 413 = 68145
Step 166: 68145 + 413 = 68558
Step 167: 68558 + 413 = 68971
Step 168: 68971 + 413 = 69384
Step 169: 69384 + 413 = 69797
Step 170: 69797 + 413 = 70210
Step 171: 70210 + 413 = 70623
Step 172: 70623 + 413 = 71036
Step 173: 71036 + 413 = 71449
Step 174: 71449 + 413 = 71862
Step 175: 71862 + 413 = 72275
Step 176: 72275 + 413 = 72688
Step 177: 72688 + 413 = 73101
Step 178: 73101 + 413 = 73514
Step 179: 73514 + 413 = 73927
Step 180: 73927 + 413 = 74340
Step 181: 74340 + 413 = 74753
Step 182: 74753 + 413 = 75166
Step 183: 75166 + 413 = 75579
Step 184: 75579 + 413 = 75992
Step 185: 75992 + 413 = 76405
Step 186: 76405 + 413 = 76818
Step 187: 76818 + 413 = 77231
Step 188: 77231 + 413 = 77644
Step 189: 77644 + 413 = 78057
Step 190: 78057 + 413 = 78470
Step 191: 78470 + 413 = 78883
Step 192: 78883 + 413 = 79296
Step 193: 79296 + 413 = 79709
Step 194: 79709 + 413 = 80122
Step 195: 80122 + 413 = 80535
Step 196: 80535 + 413 = 80948
Step 197: 80948 + 413 = 81361
Step 198: 81361 + 413 = 81774
Step 199: 81774 + 413 = 82187
Step 200: 82187 + 413 = 82600
Step 201: 82600 + 413 = 83013
Step 202: 83013 + 413 = 83426
Step 203: 83426 + 413 = 83839
Step 204: 83839 + 413 = 84252
Step 205: 84252 + 413 = 84665
Step 206: 84665 + 413 = 85078
Step 207: 85078 + 413 = 85491
Step 208: 85491 + 413 = 85904
Step 209: 85904 + 413 = 86317
Step 210: 86317 + 413 = 86730
Step 211: 86730 + 413 = 87143
Step 212: 87143 + 413 = 87556
Step 213: 87556 + 413 = 87969
Step 214: 87969 + 413 = 88382
Step 215: 88382 + 413 = 88795
Step 216: 88795 + 413 = 89208
Step 217: 89208 + 413 = 89621
Step 218: 89621 + 413 = 90034
Step 219: 90034 + 413 = 90447
Step 220: 90447 + 413 = 90860
Step 221: 90860 + 413 = 91273
Step 222: 91273 + 413 = 91686
Step 223: 91686 + 413 = 92099
Step 224: 92099 + 413 = 92512
Step 225: 92512 + 413 = 92925
Step 226: 92925 + 413 = 93338
Step 227: 93338 + 413 = 93751
Step 228: 93751 + 413 = 94164
Step 229: 94164 + 413 = 94577
Step 230: 94577 + 413 = 94990
Step 231: 94990 + 413 = 95403
Step 232: 95403 + 413 = 95816
Step 233: 95816 + 413 = 96229
Step 234: 96229 + 413 = 96642
Step 235: 96642 + 413 = 97055
Step 236: 97055 + 413 = 97468
Step 237: 97468 + 413 = 97881
Step 238: 97881 + 413 = 98294
Step 239: 98294 + 413 = 98707
Step 240: 98707 + 413 = 99120
Step 241: 99120 + 413 = 99533
Step 242: 99533 + 413 = 99946
Step 243: 99946 + 413 = 100359
Step 244: 100359 + 413 = 100772
Step 245: 100772 + 413 = 101185
Step 246: 101185 + 413 = 101598
Step 247: 101598 + 413 = 102011
Step 248: 102011 + 413 = 102424
Step 249: 102424 + 413 = 102837
Step 250: 102837 + 413 = 103250
Step 251: 103250 + 413 = 103663
Step 252: 103663 + 413 = 104076
Step 253: 104076 + 413 = 104489
Step 254: 104489 + 413 = 104902
Step 255: 104902 + 413 = 105315
Step 256: 105315 + 413 = 105728
Step 257: 105728 + 413 = 106141
Step 258: 106141 + 413 = 106554
Step 259: 106554 + 413 = 106967
Step 260: 106967 + 413 = 107380
Step 261: 107380 + 413 = 107793
Step 262: 107793 + 413 = 108206
Step 263: 108206 + 413 = 108619
Step 264: 108619 + 413 = 109032
Step 265: 109032 + 413 = 109445
Step 266: 109445 + 413 = 109858
Step 267: 109858 + 413 = 110271
Step 268: 110271 + 413 = 110684
Step 269: 110684 + 413 = 111097
Step 270: 111097 + 413 = 111510
Step 271: 111510 + 413 = 111923
Step 272: 111923 + 413 = 112336
Step 273: 112336 + 413 = 112749
Step 274: 112749 + 413 = 113162
Step 275: 113162 + 413 = 113575
Step 276: 113575 + 413 = 113988
Step 277: 113988 + 413 = 114401
Step 278: 114401 + 413 = 114814
Step 279: 114814 + 413 = 115227
Step 280: 115227 + 413 = 115640
Step 281: 115640 + 413 = 116053
Step 282: 116053 + 413 = 116466
Step 283: 116466 + 413 = 116879
Step 284: 116879 + 413 = 117292
Step 285: 117292 + 413 = 117705
Step 286: 117705 + 413 = 118118
Step 287: 118118 + 413 = 118531
Step 288: 118531 + 413 = 118944
Step 289: 118944 + 413 = 119357
Step 290: 119357 + 413 = 119770
Step 291: 119770 + 413 = 120183
Step 292: 120183 + 413 = 120596
Step 293: 120596 + 413 = 121009
Step 294: 121009 + 413 = 121422
Step 295: 121422 + 413 = 121835
Step 296: 121835 + 413 = 122248
Step 297: 122248 + 413 = 122661
Step 298: 122661 + 413 = 123074
Step 299: 123074 + 413 = 123487
Step 300: 123487 + 413 = 123900
Step 301: 123900 + 413 = 124313
Step 302: 124313 + 413 = 124726
Step 303: 124726 + 413 = 125139
Step 304: 125139 + 413 = 125552
Step 305: 125552 + 413 = 125965
Step 306: 125965 + 413 = 126378
Step 307: 126378 + 413 = 126791
Step 308: 126791 + 413 = 127204
Step 309: 127204 + 413 = 127617
Step 310: 127617 + 413 = 128030
Step 311: 128030 + 413 = 128443
Step 312: 128443 + 413 = 128856

So, 413*312 = 128856